update-rust

Run `eng/scripts/Update-Rust.ps1` to update the pinned Rust toolchain versions. ## What the script does - Fetches the latest stable Rust version from GitHub (if `-Version` not specified) - Detects a working nightly toolchain date from `rustc --version` (if `-NightlyVersion` not specified), advancing day-by-day until `rustup` can install it - Updates `rust-toolchain.toml`, `eng/scripts/Language-Settings.ps1`, and `eng/scripts/*.rs` shebang lines ## Parameters - `-Version` — stable channel version (e.g., `"1.96.0"`); omit to auto-detect from GitHub - `-NightlyVersion` — nightly date (e.g., `"2026-05-01"` or `"nightly-2026-05-01"`); omit to auto-detect from `rustc --version` ## Examples Update both channels automatically: ```powershell eng/scripts/Update-Rust.ps1 ``` Update to a specific stable version with auto-detected nightly: ```powershell eng/scripts/Update-Rust.ps1 -Version 1.96.0 ``` Update both channels explicitly: ```powershell eng/scripts/Update-Rust.ps1 -Version 1.96.0 -NightlyVersion 2026-05-01 ```